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This study evaluated the effectiveness of two interceptive approaches to palatally displaced canines (PDC), i.e. extraction of the primary canines alone or in association with the use of a cervical-pull headgear. The randomized prospective design comprised 75 subjects with PDC (92 maxillary canines) who were randomly assigned to three groups: extraction of(More)
This study evaluated the effectiveness of two interceptive approaches to palatally displaced canines (PDCs), ie, extraction of the deciduous canines alone and in association with the use of a cervical pull headgear. The prospective longitudinal design of the investigation included 46 subjects with PDC (62 maxillary canines) who were randomly assigned to one(More)
Ultrasonography was performed on 10 patients with acute posttraumatic conditions of the knee in which X-ray films could exclude the presence of fractures. In 2 of 10 cases, the sonographic picture was normal; in the remaining 8 patients, ultrasonography disclosed capsulo-ligamentous lesions of different degrees of severity that were confirmed by surgery in(More)
INTRODUCTION Our aim in this prospective randomized clinical study was to assess the prevalence rate of eruption of palatally displaced canines, diagnosed at an early developmental stage with posteroanterior radiographs and consequently treated by rapid maxillary expansion. METHODS A sample of 60 subjects in the early mixed dentition with palatally(More)
Building a secure and reliable software system is crucial. Requirements Engineering plays a main role in this process, because it helps to decide precisely what to build. A singular approach [8] proposes a methodology based in the LEL (Language Extended Lexicon) to record the terminology of the macrosystem and scenarios to model the behavior; a set of(More)
Model driven architecture (MDA) is a software development framework based on automatic transformations of models. The first of these models, the computation independent model (CIM), is used to define the business system, and it is usually represented with UML models. Natural language is widely used in requirements engineering as it is generally(More)
INTRODUCTION The aim of this study was to evaluate the significance of association between distally displaced premolars (DDP) and palatally displaced canines (PDC) in the pattern of associated phenotypes of dental developmental disturbance. METHODS A sample of 2811 subjects (mean age, 9 years 7 months +/- 1 year 3 months) was divided randomly into 2(More)
Natural language requirements models are useful during the first stages of software development. Formal methods help to increase software quality and reliability. In order to take advantage of both of them, we propose a requirements definition strategy which integrates them. We present in this paper the formalisation of a semiautomatic strategy to derive(More)